Gas saver



H. K. RYDER April 25, 1933.

GAS SAVER Filed April 25, 1931 Patented Apr. as, 193e @FHQE i HENRY K. RYDER, F LAUREL, MONTANA.

GAS SAVER Application led April 25, 1931. ASerial No. 532,854.

My invention relates to an auxiliary air inlet for gas engines and has for its primary object to provide an auxiliary air inlet adapted to be associated withthe intake manifold of a gas engine and operable by the suction of the engine to admit an extra ,supply of air in proportions necessary to produce a mixture within the intake manifold which is best suited for operating the engine.

Another object of the invention is to provide a device of the Yabove-mentioned character which is -simple and durable in construction, reliable and efficient in operation and inexpensive to manufacture.

Other objects and advantages of the invention will be apparent during the course of the following description.

v In the accompanying drawing, forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Fig. 1 is a front elevation view of the device applied to the intake manifold of a gas were,

Fig. 2 1s a slde view of the device, 4

Fig. 3 is an enlarged side view, partly in section,

. Fig. 4 is a detail sectional view taken on lines 4.-4: 0f Fig. 3,

Fig. 5 is a cross section taken on lines 5-5 of Fig. 4, and, i

Fig. 6 is a sectional view of a modified -form of inlet nipple. p

In the drawing, wherein for the purpose of illustration, I have shown a preferred em bodiment of my invention, the numeral 5 denotes the intake manifold of a convention al type of gas engine.

Referring more particularly to my invention, the device consists of a substantially T-shaped pipe 6, the stem of the pipe having its lower end` coiled, as at 7, to provide a right angular extension 8 having external screwthreads 9, through the medium of which the device is connected to the threaded opening in the intake manifold, to which the vacuum line 10 is ordinarily connected. The arms 11 of the pipe are curved downwardly and inwardly, as at 12, the terminals 13 of the arms extending downwardly in spaced parallel relation. The terminals 13 are connected by a cross-brace 13 which fits snugly against the extension 8 and pipe 6 and holds the parts against'relative vibration. The lower ends of terminals 13 are provided with interior screw-threads to receive the head 14 of theiny let nipple 15 which is screwed therein. A

cap or plug 16 is screwed in the lower end of the nipple 15 having a central orifice 17 surrounded by the valve seat 18 to receive the ball valve 19. The lower end of the cap is provided with an inlet opening 20 in alinement with the orifice 17. The upward movement of the ball valve is limited by the tube 21 which is 'disposed within the upper end of the nipple 15, the upper end of the tube being screwed into the bore 22 through the head 14 of the nipple. The lower end of the tube is`. provided with apertures 28 in its walls. The head 24 of the stem is provided with interior screw-threads 25 to permit attachment of the A vacuum line 10 with the device.

A modified form of cap .for the air inlets is shown in Fig. 6, which consists of'a conica l body 26 having its upper end provided with external screw-threads 27 topermit the cap to be screwed into the lower end of the nipple 15. In the upper end of the body is a 'valve seat 2S having a central orifice 29 on which the ball valve 19 is adapted to be seated. The walls of the body are pro- `vided with a series of spaced apertures 30 through which air is admitted.

In operation, it will be seen that when the device is attached to the intake manifold of' a gas engine an auxiliary supply of air will be admitted to the manifold, to mix with thegas. The upward movement of the. valves is limited by the tubes 21, so that no `matter how great the suction is the passages of the arms will'not be closed. As the suction decreases the ball valves will automatically seat closing the orifices 17, cutting ofi' the auxiliary supply of air.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that certain changes in the shape,

size and arrangement of the parte ma be made without departing from the spirit of the invention or the scope of the subjoined claim.

' Having thus described my invention, I claim An auxiliary air inlet for the intake manifold of a combustion engine including a downwardly extended suction pipe coiled to provide a substantially horizontal extension forthreaded engagement with an intake manifold to discharge thereinto, oppositely disposed tubular arms on the Apipe above the coil and extending downwardly below. the coil in substantially parallel relation, ball 1 valves for normally closing the lower ends of said arms, said valves being liftable by suction to admit yfresh air to the arms and pipe, and a rigid spacing connection between the arms and engaged bythe pipe and the extension. v

In testimony whereof I aix my signature;

HENRY K. RYDER. 

